Adapter for the drain outlets of crank cases



Aug. 1l, 1931. H. J. ENGBRECHT ADAPTER FOR THE DRAIN OUTLETS OF CRANK CASES 2 Sheets-Sheet 1 Original Filed March '7, 1925 Aug, l1, 1931. H. J. ENGBRECHT ADAPTER FOR THE DRAIN OUTLETS OF' CRANK CASE-S Original Filed March '7, 1925 2 Sheets-Sheet 2 WAN ramas aug. ii, 193i EEE 'TA-TES PTEN'E @ENQ HERMAN J. ENGBRECHT, 0F KANSAS CITY, MISSOURI, ASSIGNOR T0 STANDARD OIL COMPANY, OF WHITING, INDIANA, A CORPORATION 0F INDIANA ADAPTER FOR THE DRAIN OUTLETS 0F CRANE GASES Original application led March 7, 1925, Serial No. 13,819. Bivded and this application led August 11,

1926-, Serial No. 128,583. Renewed November 5, 1930.

My invention relates generally to adapters for the drain outlets of crank cases of internal.

My primary objects are to provide a novel,

simple, and inexpensive type of hollow drainadapter through which the crank case is evacuated, for use, more especially, though not exclusively, with apparatus as disclosed in said pending application, and which may be secured in the openings commonly provided in automobile crank cases for receiving the ordinary drain plugs; and particularly to provide such an adapter which may be used on all of the dierent kinds of crank cases, as a substitute for the ordinary drain plugs provided thereon; to provide an adapter of the character stated equipped at its drainoutlet with a self-closing valve adapted to be automatically opened in the application of 'the evacuating apparatus thereto, and more particularly presenting a plurality of drain outlets one of which is equipped with the valve referred to and the other of which is adapted to receive an ordinary plug and through which thel case may be drained in the ordinary way by removing the plug; and other objects as Vwill be manifest from the following description.

Referring to the accompanying drawings wherein my invention is illustrated in its preferred embodiment as applied to the crank case of anautoinobile engine and for cooperation with evacuating appaartus forming the subject of said pending application Figure y1 is a view, partly diagrammatic, of a crank case equipped with my improved adapter and showing, associated therewith, apparatus for evacuating the crank case and of the type disclosed in my pending application. Figure 2 is a view in vertical sectional elevation of the adapter-equipped portion of the crank case and that end of the extension pipe device forming a part of the evacuating apparatus and which directly cooperates with the adapter, the pipe device being shown disengaged from the adapter, but in alignment-therewith- Figure 3 is a similar View showing the extension pipe device in the position it assumes when engaged in operative position with the adapter; and Figure 4, a broken, sectional view of the lower portion of a crank case of the side-outlet type showing my improved adapter applied thereto.

The preferred form of drain-adapter shown and represented generally at 10, comprises a body-portion containing therethrough an opening 11 one end of which is restricted, as represented at 12, at which port1 on the body of the adapter is of reduced diameter, as represented at 13, and forms a valve-seat`14, the wall of this opening at its other end being internally threaded, as represented at 15. The body-portion is provided with a laterally-extending boss 16 disposed at substantially a right angle to the plqane of the opening 11 and internally and externally threaded as represented at 17 and 18. The adapter also comprises an inwardly-opening check-valve 19 shown as in the form of a ball, which is normally yieldingly held against the seat 14 by a coil-spring 20 located in the opening 11 and confined between the valve 19 and a hollow member hereinafter referred to screwed into the threaded portion 15 of the adapter.

As a preface to the description of the various situationsin which the adapter may be used, it may be stated that, as hereinbefore mentioned, the adapter` is designed for use ii more particularly with the evacuating apparatus shown in my said pending application, a general description of which is as follows:

The apparatus 'referred to comprises a receptacle 21 preferably of glass to render the a 24, to the ejector the exhaust from which discharges through the pipe 25, the ejector, which is located at the base of the pipe 25 and therefore at the upper end of the receptacle 21 operates to produce suction in this receptacle. The apparatus also comprises flexible hose lines 26, 27 and 28 which connect with, and open into, the handle portion 29 of a rigid extension pipe device'represented generally at 30,- the head referred to being connected with one end of a rigid pipe 31 opening into one endfof a passage (not shown) in the head 29 which communicates with the pipe 28, the latter communicating with the interior of the lreceptacle 21 adjacent the upj per end thereof, the arrangement being such that the suction produced in the receptacle 21 operates to eXert suction in the-pipe 31, head 29, and pipe 28 to draw the oil from the cra-nk case to ,which the extension pipe device is applied, and discharge it into the receptacle 21 from which latter it flows, under the control of the operator into a tank 32 having a vent 33 and in communication with a pump 34 to withdraw the used oil from the tank 32v as desired.

In the arrangement shown the pipe 23 does not lead directly to the-ejector device referred to, but opens into the pipe 26, this pipe, as also the pipe 27, opening into the head 29. The head 29 is provided with valve mechanism (not shown) which controls the How of air from the pipe 26 to the pipe 27 this valve mechanism being controlled by a lever 35 fulcrumed on the head 29, whereby the operator while grasping the extension pipe device 30 may control the operation of-the ejector device referred to.

The forward end of the pipe section 31 at which it is adapted to be releasably applied to the adapter above described and an air-- tight connection therewith be produced and open the check valve 19, is constructed as follows: This end of the pipe section 31 is provided with a gasket 36 located in the outer end of a sleeve 37 slidably mounted on the outer end of the pipe section 31, the gasket being held in place against a flange 38 on the sleeve by a threaded washer 39 screwed into the threaded portion 40 of the sleeve 37. The sleeve is normally yieldingly pressed forwardly by a coil spring 41 positioned in the sleeve 31 and inl a recess 42 in the end of the pipe section 31, and bearing at its ends against the bottom wall of the recess 42 and the washer 39, respectively, in which position of -the Sleeve it engages at a flange 43 thereon, with a shoulder 44 provided by the enlarged bearing portion 45 of the pipe 31. The pipe extension 30 is also formed with a pin 46 rigidly secured at one end in a ported cross wall 47 in the portion 45 of the pipe 31, the outer end of this pin, which is arranged concentric with the pipe 31, extending adjacent the gasket 36, as shown.

The arrangement of the parts of the adapter, as described, is such that upon applying theextension pipe device 30 to the reduced end portion 13 of the adapter tov engage the gasket 36 with this portion 13 and pushing the pipe device 30 toward the adapter, .the gasket is caused to make a tight joint with the portion 13, and the pipe 31, together with the pin 46, moves forwardly to the position shown in Fig. 3 the pin 46 in this operation unseating the valve 19 in opposition to the spring 20 and establishing communication between the pipe 31 and the interior of the adapter. l

The adapter illustrated is adapted for universal application to crank cases. In Fig.

2 I have shown it as installed in the crank case of a Ford engine represented at 48, the adapter in such installation being screwed at its boss 16 into the internally threaded drain outlet 49 of the crank case 48, and the end thereof, threaded at 15, closed by a plug 50, screwed into a bushing 51 engaging the threads 15 of the adapter. In Fig. 3 I have shown the adapter as installed in a crank case of a diiferent construction represented at 52, and containing a larger drain outlet 53, the adapter in this construction being secured at the drain opening 53, by a bushing 54, eX- ternally threaded at 55 at which portion it screws into the drain outlet 53, and internally threaded at 56 into which portion the boss 16 of the adapter is screwed. In Fig. 4 the adapter is shown as installed in a crank case represented at 57 and of a type wherein its drain outlet, represented at 58, opens through a side wall of the case. In this installation the connection between the adapter and case 57 is made at the threadedl portion 15 of the adapter through the medium of a bushing 59 screwed at one end into the drain outlet 58 and at its opposite end into the threaded portion 15 of the adapter, a plug 60 being screwed into the boss 16 of the adapter which latter is so positioned that its boss projects downwardly.

In the use of the adapter with the apparatus shown, the operator grasping the hand grip 29 applies the outer end of the extension pipe device 30 to the adapter as shown in Fig. 3 and as hereinbefore described, and pressesnpon the valve-controlling lever 35 which permits air to flow from the tank 32 to the ejector device referred to thus producing suction in the tank 21 which is communicated to the pipe 31 and exerted on the oil in the crank case, which latter is quickly evacuated of its oil content, the oil being drawn into the tank 21 Whereinit is exposed to view.

The adapter, as shown, presents the advantage of universal application to crank cases of different forms while affording, preferably by the provision of a removable solid drain plug, means by which the crank case may be drained by gravity ow alone if desired.

While I .have illustrated and described ak particular embodiment of my invention, I do not wishto be understood as intending to limit it thereto, as the same may be variously modified and altered without departing from the spirit of the invention.

What I claim as new, and desire to secure by Letters Patent, is:

1. 'In an adapter for application to the drain-outlet of an automobile engine crankcase, a body having a hollow boss, said body also having an opening therethrough disposed at substantially a right vangle to said boss, said boss and the portion of said adapter at one end of said opening being adapted to have solid drain plugs applied thereto and also adapted for connection with said drainoutlet.

2. In an adapter for application to the drain-outlet of an `automobile engine crankcase, a body having an internally and externally threaded boss, said body also having an opening therethrough disposed at substantially a right angle to said boss, the wall of the body at one end of said opening being threaded. l Y

3. In an adapter for application to the drain-outlet of an automobile engine crank- Case, a body having an internally and externally threaded boss, said body also having an opening therethrough disposed at substantially a right angle to said boss, lthe wall of the body at one end of said opening being internally threaded.

4. In an adapter for application to .the drain-outlet of an automobile engine crankcase, a body having a hollow boss, said body also having an opening therethrough disposed at substantially a right angle to said minals, a valve seat within the body adjacent one of said terminals, a check-valve for engagement with said seat, a spring urging the check-valve against the seat, means for connecting ya second terminal to a crank-case, means for closing the thirdterminal removable for drain purposes, saidspring abutting one of said means and being held within the body thereby.

10. In an adapter for the drain-outlet of an automobile crank-case, a hollow body generally of T-shape open at its three terminals, one of said terminals having a valve seat adjacent the same, a check valve lfor engagement with said seat, each of the remaining terminals being selectively attachable to the crank-case and to serve as a drain, and removable drain-plug means for the terminal not selected for attachment to the crank-case.

` HERMAN J. ENGBRECI-IT.

boss, with the wall of the body at one end of said opening adapted to have a solid drainplug applied thereto; and a check-valve controlling the other end of said opening. A

5. In an adapter. for the drain-outlet of an automobile engine crank-case, a body havingra portion adapted to be connected with said drain-outlet, said body having an outlet, and a check-valve controlling said last mentioned outlet.

6. Means for draining motor vehicle crank cases including a drain valve having a selfseating closure, in combination with a valve opening conduit adapted to drain o the contentsof the crank case.

7. Means for draining motor vehicle crank cases including a drain valvehaving a selfseating plug, in combination with a plug displacing implement functional to conduct oi the contents of the crank case beyond the confines of the vehicle.

8. Means 'for draining motor vehicle crank` cases includinga drain valve, in combination with an implement to open said valve and 

